Best Time to Fly IAH to EWR: On-Time Stats by Hour & Airline
George Bush Intercontinental/Houston → Newark Liberty International
Data through July 2026 · Last updated October 18, 2026
3,769 flights were scheduled from Houston (IAH) to Newark (EWR) in the last 12 months, and 74.8% of those that flew arrived on time, 2.9 points below the US average of 77.6%.
Spirit Airlines was the most punctual of the 2 airlines on the route at 77.4%, while United Airlines trailed at 74.6%.
January has been the best month (87% on time) and Thursday the weakest day of the week (70%).
1.8% of flights were cancelled, versus 1.8% nationally.
IAH to EWR on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Spirit Airlines | 77.4% | 62 min | 6.0% | 235 |
| United Airlines | 74.6% | 70 min | 1.5% | 3,534 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IAH to EWR
On-time arrival % by scheduled departure hour (local time), 7,519 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 91.7% | 1.4% | 73 |
| 6am–7am | 90.4% | 1.4% | 786 |
| 7am–8am | 87.5% | 2.4% | 682 |
| 8am–9am | 85.6% | 3.0% | 236 |
| 9am–10am | 81.7% | 0.5% | 814 |
| 10am–11am | 78.2% | 1.7% | 461 |
| 11am–12pm | 71.4% | 1.9% | 370 |
| 12pm–1pm | 71.4% | 1.1% | 532 |
| 1pm–2pm | 70.8% | 1.8% | 672 |
| 2pm–3pm | 60.0% | 1.6% | 758 |
| 3pm–4pm | 48.2% | 1.8% | 57 |
| 4pm–5pm | 60.9% | 2.2% | 690 |
| 5pm–6pm | Limited data | 13 | |
| 6pm–7pm | 67.5% | 2.1% | 673 |
| 7pm–8pm | 58.4% | 1.9% | 103 |
| 8pm–9pm | 75.3% | 2.0% | 598 |
| 9pm–10pm | Limited data | 1 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on IAH to EWR
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 82.8% | +6.5 pts | 0.0% | 145 |
| Christmas & New Year (Dec 20 - Jan 3) | 72.6% | -3.7 pts | 1.2% | 325 |
| Summer peak (Jun 15 - Aug 15) | 65.5% | -10.8 pts | 3.2% | 1,297 |
| All other days | 76.2% | — | 1.4% | 5,752 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).